Person disliked for slow progress? (5)
I believe the answer is:
creep
'person' is the definition.
The answer is an example.
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for creep that I've seen before include "Advance slowly and stealthily" , "Move furtively" , "Fawn" , "wretch" , "Tiptoe" .)